<template>
  <div>

    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>


    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary">添加角色</el-button>
        </el-col>
      </el-row>


      <el-table :data="roleList" border stripe>
        <el-table-column type="expand">
          <template slot-scope="scope">
            <!--渲染一级权限-->
            <el-row v-for="(item1,i1) in scope.row.children" :key="item1.id"
                    :class="['bdbottom',i1===0?'bdtop':'','vcenter']">
              <!--渲染一级权限-->
              <el-col :span="5" closable
                      @close="removeRightsById(scope.row,item1.id)">
                <el-tag>
                  {{ item1.authName }}
                </el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!--渲染二和三级权限-->
              <el-col :span="19">
                <el-row v-for="(item2,i2) in item1.children" :key="item2.id" :class="[i2===0?'':'bdtop','vcenter']">
                  <el-col :span="6">
                    <el-tag type="success" closable
                            @close="removeRightsById(scope.row,item2.id)">
                      {{ item2.authName }}
                    </el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag type="warning" v-for="(item3,i3) in item2.children" :key="item3.id" closable
                            @close="removeRightsById(scope.row,item3.id)">
                      {{ item3.authName }}
                    </el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleName"></el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <el-button size="mimi" type="primary" icon="el-icon-edit">编辑</el-button>
            <el-button size="mimi" type="danger" icon="el-icon-delete">删除</el-button>
            <el-button size="mimi" type="warning" icon="el-icon-setting" @click="showSetRightDialog(scope.row)">分配权限</el-button>
          </template>
        </el-table-column>

      </el-table>


    </el-card>



    <!--分配角色对话框-->

    <el-dialog
      title="分配权限"
      :visible.sync="setRightDialogVisible"
      width="30%" @close="setRightDialogClosed" >
      <el-tree :data="rightsList" :props="treeProps"   show-checkbox node-key="id" default-expand-all :default-checked-keys="defkeys" ref="treeRef"></el-tree>
      <span slot="footer" class="dialog-footer" >
    <el-button @click="setRightDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="allotRights">确 定</el-button>
  </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: "Roles",
  created() {
    this.getRolesList()
  },
  data() {
    return {
      roleList: [],
      setRightDialogVisible:false,
      rightsList:[],
      //所有者的权限
      treeProps:{
        label:'authName',
        children:'children'
      },
      defkeys:[],
      //当前即将分配权限的id
      roleId:''

    }
  },
  methods: {
    async getRolesList() {
      const {data: res} = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        this.$message.error('获取角色失败')
      } else {
        this.roleList = res.data;
        console.log(this.roleList);
      }
    },
    async removeRightsById(role, rightId) {
      const str = await this.$confirm('此操作将删除该权利, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch((err) => err)
      if (str === 'confirm') {
        const {data: res} = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
        if (res.meta.status == 200) {
          //this.getRolesList()
          role.children = res.data
        } else {
          return this.$message.error("删除失败")
        }
      } else {
        return this.$message.info('取消了删除')
      }
    },
    //获取初始的权限树
    async showSetRightDialog(role){
      const {data:res}=await this.$http.get('rights/tree')
      this.roleId=role.id
     if(res.meta.status===200){
       this.rightsList=res.data
       this.getLeafkeys(role,this.defkeys)
     }else{
       this.$message.error('获取数据失败')
     }
     this.setRightDialogVisible=true
    },
    //通过递归的方式，获取所有角色的三级权限的id
    getLeafkeys(node,arr){
      if(!node.children){
         return arr.push(node.id)
      }
      node.children.map((item)=>{
        this.getLeafkeys(item,arr)
      })

    },
    setRightDialogClosed(){
      this.defkeys=[]
    },
    async allotRights(){
      //获取权限的id
      const keys=[
        ...this.$refs.treeRef.
        getCheckedKeys(),
        ...this.$refs.treeRef.
        getHalfCheckedKeys()]
     const idStr=keys.join(',');
      const {data:res}=await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr});
      if(res.meta.status!==200){
        return this.$message.error(res.meta.msg)
      }else{
        this.$message.success('权限分配成功了')
        this.getRolesList()
        this.setRightDialogVisible = false
      }
    }
  },


}
</script>

<style lang="less" scoped>
.el-tag {
  margin: 7px;
}

.bdtop {
  border-top: 1px solid #eee;
}

.bdbottom {
  border-bottom: 1px solid #eee;
}

.vcenter {
  display: flex;
  align-items: center;
}

</style>
